20 Day Stranger is an iPhone app that reveals intimate, shared connections between two anonymous individuals. It’s a mobile experience that exchanges one person’s experience of the world with another’s, while preserving anonymity on both sides.
For 20 days, you and a stranger will experience the world in your own way, together. You’ll never know who it is or exactly where they are, but we hope it will reveal enough about someone to build your imagination of their life… and more broadly, the imagination of strangers everywhere.
Source: www.20daystranger.com